Sciweavers

3891 search results - page 1 / 779
» Query Models
Sort
View
ER
2004
Springer
107views Database» more  ER 2004»
13 years 10 months ago
A Scaleless Data Model for Direct and Progressive Spatial Query Processing
A progressive spatial query retrieves spatial data based on previous queries (e.g., to fetch data in a more restricted area with higher resolution). A direct query, on the other si...
Sai Sun, Sham Prasher, Xiaofang Zhou
STOC
2009
ACM
107views Algorithms» more  STOC 2009»
14 years 5 months ago
Efficient discrete-time simulations of continuous-time quantum query algorithms
The continuous-time query model is a variant of the discrete query model in which queries can be interleaved with known operations (called "driving operations") continuo...
Richard Cleve, Daniel Gottesman, Michele Mosca, Ro...
WISE
2007
Springer
13 years 11 months ago
Querying Capability Modeling and Construction of Deep Web Sources
Information in a deep Web source can be accessed through queries submitted on its query interface. Many Web applications need to interact with the query interfaces of deep Web sour...
Liangcai Shu, Weiyi Meng, Hai He, Clement T. Yu
ESWS
2010
Springer
13 years 3 months ago
Modeling and Querying Metadata in the Semantic Sensor Web: The Model stRDF and the Query Language stSPARQL
Abstract. RDF will often be the metadata model of choice in the Semantic Sensor Web. However, RDF can only represent thematic metadata and needs to be extended if we want to model ...
Manolis Koubarakis, Kostis Kyzirakos
SIGMOD
2006
ACM
123views Database» more  SIGMOD 2006»
14 years 4 months ago
Exploiting predicate-window semantics over data streams
The continuous sliding-window query model is used widely in data stream management systems where the focus of a continuous query is limited to a set of the most recent tuples. In ...
Thanaa M. Ghanem, Walid G. Aref, Ahmed K. Elmagarm...